Skip to content

Instantly share code, notes, and snippets.

View jamak's full-sized avatar

jamak

65 followers · 43 following
View GitHub Profile
@omenos
omenos / rust-for-c.md
Created December 21, 2025 09:32
Using Rust to Develop C Libraries

Rust Libraries with C Signatures for GNU/Linux

Created at 2025-12-21 09:14:31 UTC

@ 2025-12-21 09:14:31 UTC

Examine the idea of authoring libraries in Rust, but exposing their APIs via C signatures. The goal being to provide type and memory safety to existing applications and services via API/ABI compatible drop-in replacements for foundational dependencies without needing to perform complete ecosystem rewrites. Apply this concept to common GNU/Linux userspace libraries, such as libc, libm, libssl/libcrypto, etc. What would the impact be? How practical of a solution is this over leaving things as they are or performing large-scale rewrites in Rust?

Thinking

The user is asking about a specific approach to software safety: writing libraries in Rust for memory and type safety, but exposing them through C-compatible ABIs so they can serve as drop-in replacements for existing C libraries in the GNU/Linux ecosystem. This is a nuanced systems programming question that requires

@OrionReed
OrionReed / dom3d.js
Last active January 26, 2026 18:59
3D DOM viewer, copy-paste this into your console to visualise the DOM topographically.
// 3D Dom viewer, copy-paste this into your console to visualise the DOM as a stack of solid blocks.
// You can also minify and save it as a bookmarklet (https://www.freecodecamp.org/news/what-are-bookmarklets/)
(() => {
const SHOW_SIDES = false; // color sides of DOM nodes?
const COLOR_SURFACE = true; // color tops of DOM nodes?
const COLOR_RANDOM = false; // randomise color?
const COLOR_HUE = 190; // hue in HSL (https://hslpicker.com)
const MAX_ROTATION = 180; // set to 360 to rotate all the way round
const THICKNESS = 20; // thickness of layers
const DISTANCE = 10000; // ¯\\_(ツ)_/¯
@scyto
scyto / proxmox.md
Last active January 26, 2026 13:09
my proxmox cluster

ProxMox Cluster - Soup-to-Nutz

aka what i did to get from nothing to done.

note: these are designed to be primarily a re-install guide for myself (writing things down helps me memorize the knowledge), as such don't take any of this on blind faith - some areas are well tested and the docs are very robust, some items, less so). YMMV

Purpose of Proxmox cluster project

Required Outomces of cluster project

@yoavg
yoavg / rl-for-llms.md
Last active December 27, 2025 05:31

Reinforcement Learning for Language Models

Yoav Goldberg, April 2023.

Why RL?

With the release of the ChatGPT model and followup large language models (LLMs), there was a lot of discussion of the importance of "RLHF training", that is, "reinforcement learning from human feedback". I was puzzled for a while as to why RL (Reinforcement Learning) is better than learning from demonstrations (a.k.a supervised learning) for training language models. Shouldn't learning from demonstrations (or, in language model terminology "instruction fine tuning", learning to immitate human written answers) be sufficient? I came up with a theoretical argument that was somewhat convincing. But I came to realize there is an additional argumment which not only supports the case of RL training, but also requires it, in particular for models like ChatGPT. This additional argument is spelled out in (the first half of) a talk by John Schulman from OpenAI. This post pretty much

@0xabad1dea
0xabad1dea / newspaper.html
Last active November 2, 2024 08:33
cohost newspaper template
<div style="width:100%; font-family:serif;font-size:16px;text-align:justify;">
<div style="font-weight:900;text-align:center;font-size:48px;border-bottom:3px solid black;font-variant:small-caps;margin-bottom:0px;">
The Eggbug Times
</div>
<div style="font-style:italic; font-size:18px;text-align:center;">
the fourth website to ever exist
</div>
<div style="text-transform:uppercase;font-size:48px;text-align:center;">
@katef
katef / plot.awk
Last active January 28, 2026 10:56
#!/usr/bin/awk -f
# This program is a copy of guff, a plot device. https://github.com/silentbicycle/guff
# My copy here is written in awk instead of C, has no compelling benefit.
# Public domain. @thingskatedid
# Run as awk -v x=xyz ... or env variables for stuff?
# Assumptions: the data is evenly spaced along the x-axis
# TODO: moving average
@ChrisPenner
ChrisPenner / Optics Cheatsheet.md
Last active August 12, 2025 12:57
Optics Cheatsheet
@lizthegrey
lizthegrey / attributes.rb
Last active August 29, 2025 15:40
Hardening SSH with 2fa
default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'
@jamesog
jamesog / README.md
Last active April 21, 2025 02:02
Yubikey SSH without GPG

Yubikey as an SSH key

All other guides I've seen (https://github.com/drduh/YubiKey-Guide being the most prolific) tell you to use the Yubikey's smartcard (PKCS#11) features with GnuPG via gpg-agent.

STOP THE MADNESS!

OpenSSH has supported OpenSC since version 5.4. This means that all you need to do is install the OpenSC library and tell SSH to use that library as your identity.

Prequisites

@ixdy
ixdy / yubikey4-ssh-macos.md
Last active September 25, 2025 06:45
Setting up ssh public key authentication on macOS using a YubiKey 4

Setting up ssh public key authentication on macOS using a YubiKey 4

I largely followed Florin's blog post, but have a few notes to add regarding issues I encountered:

Basic setup notes

  1. I used a YubiKey 4, while the blog describes using a YubiKey NEO. I'm sure a YubiKey 5 would also work. I'm also running macOS 10.13.6.
  2. I installed GPGTools as recommended. However, as I'll note later, it seems that gpg-agent only automatically starts when gpg is used; for ssh, you'll need to ensure it's running.
  3. Before generating your keys, decide what key size you want to use. If you run the list command inside gpg --edit-card, look for the Key attributes line to see what is currently selected. On my YubiKey 4, it defaulted to 2048 bits for all keys:
Key attributes ...: rsa2048 rsa2048 rsa2048